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This content will become publicly available on December 20, 2018

Title: Detecting self-ion irradiation-induced void swelling in pure copper using transient grating spectroscopy

Irradiation-induced void swelling remains a major challenge to nuclear reactor operation. Swelling may take years to initiate and often results in rapid material property degradation once started. Alloy development for advanced nuclear systems will require rapid characterization of the swelling breakaway dose in new alloys, yet this capability does not yet exist. In this paper, we demonstrate that transient grating spectroscopy (TGS) can detect void swelling in single crystal copper via changes in surface acoustic wave (SAW) velocity. Scanning transmission electron microscopy (STEM) links the TGS-observed changes with void swelling-induced microstructural evolution. Finally, these results are considered in the context of previous work to suggest that in situ TGS will be able to rapidly determine when new bulk materials begin void swelling, shortening alloy development and testing times.
Authors:
ORCiD logo [1] ;  [1] ;  [2] ;  [3] ;  [3] ; ORCiD logo [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Nuclear Science and Engineering
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Nuclear Science and Engineering; Univ. of Central Florida, Orlando, FL (United States). Dept. of Materials Science and Engineering. Advanced Materials Processing and Analysis Center
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Dept. of Radiation-Solid Interactions
Publication Date:
Report Number(s):
SAND2017-13639J
Journal ID: ISSN 1359-6454; PII: S1359645417310121; TRN: US1801533
Grant/Contract Number:
NA0003525; NA0002135; NRC-HQ-84-15-G-0045
Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 145; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); Nuclear Regulatory Commission (NRC) (United States)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; void swelling; transient grating spectroscopy; irradiation; surface acoustic wave; ion beam
OSTI Identifier:
1421631